11 Facilities
An onsen on an island 15 minutes' drive from Naha Airport. From the open-air bath you watch the sun set over the Kerama sea and planes land right in front of you. ¥2,000 with towels, open from 6 am — ideal last soak before your flight.
Seven minutes from Yunoyama-Onsen Station at the foot of Mt. Gozaisho, the bath inside the 'healing and food' resort Aqua Ignis. Free-flowing alkaline water in a bamboo-view rotenburo, lie-down bath and cypress barrel tubs. Luxurious in feel yet only ¥600 weekdays / ¥800 weekends, open 6 am to midnight. Patisserie, Italian restaurant and strawberry picking on site.
An onsen on the fifth floor of a resort hotel facing Emerald Beach, seven minutes' walk from the Churaumi Aquarium. Chloride water is drawn from Jurassic strata some 200 million years old, and the open-air bath looks across cobalt-blue sea to Ie Island. Two bathrooms — one with a dry sauna, one with steam — alternate daily between men and women, with cold plunge and outdoor rest area. Day use ¥2,150 including towel set, 6:00–10:00 and 15:00–23:00. A rare genuine hot spring in Okinawa, best enjoyed in the late afternoon after the aquarium.
Five minutes on foot from Musashi-Koyama Station on the Tōkyū Meguro line, this rare central-Tokyo bathhouse offers two different natural hot springs. The indoor bath is coffee-coloured 'kuroyu' (sodium-bicarbonate water); the open-air bath uses salty rust-brown 'golden water' pumped from 1,500 m below and left free-flowing — both certified as therapeutic springs. Admission is Tokyo's standard sentō rate of ¥550, with sauna and bedrock bath extra. Open 12:00–24:00, from 08:00 on Sundays; closed Mondays (open if a holiday). Close to Meguro and Gotanda, it pairs perfectly with snacking along the Palm shopping arcade. Soap and shampoo provided.
A resort bathing complex next to the American Village in Chatan, central Okinawa, facing Sunset Beach. The sodium-chloride 'Chatan Onsen' water from 1,400 m fills an indoor bath hall and an open-air bath overlooking the sea, and there is also a swimsuit zone with an outdoor hot-spring pool, jacuzzi and sauna, with free passage between pool and beach. Adults ¥1,800, children ¥800 (a cheaper morning-bath plan exists); baths open 07:00–23:00 (last entry 22:00), outdoor facilities 10:00–21:00, no closing days apart from one maintenance day a year. Loungewear and towel rental and a restaurant are available; about 40 minutes by car from Naha. Rinse off the salt after a day in the sea and soak while the sun sets — a very Okinawan day.
An urban natural hot spring 8 minutes on foot from JR Sugamo Station, named after Somei village, birthplace of the Somei-Yoshino cherry. Renovated in August 2025, the interior is now calmer and more Japanese-modern. Amber sodium-chloride strong-salt water pumped from 1,800 m underground holds heat so well it is called the 'bath of warmth', enjoyed in an outdoor rock bath, pot tubs and a garden-view indoor pool, with a hot sauna, cold plunge, outdoor cooling area and a mist sauna on the women's side. Admission including towels and loungewear is ¥2,100 on weekdays and ¥2,900 on weekends and holidays for adults, ¥1,200 for children aged 6 to elementary school – city prices, but with no time limit you can stay all day. Open 10:00–23:00 (last entry 22:30), irregular maintenance closures. Japanese, Western and Chinese dining, a large tatami rest hall, body care, scrubs, esthetics and even hair styling are on site, and a free shuttle bus runs from Sugamo Station; parking for 88 cars (2 hours free on weekdays). Combine it with Sugamo's Jizō-dōri shopping street or Rikugien garden for the closest thing to an onsen getaway on the Yamanote Line.
One of Japan's largest spa complexes, inside Nagashima Resort. Seventeen baths for men and women sit across a 33,000 m² garden, fed by 10,000 tonnes a day of alkaline simple spring, with a free-flowing great rock bath.
The city hotel's bathhouse in the Shinjiko onsen quarter on Lake Shinji. It draws on a natural spring of about 70°C rising from 1,250m - a sodium-calcium sulphate-chloride spring - and the men's bath overlooks the lake. Day bathing is 1,100 yen tax included, with generous hours from 6 in the morning to midnight.
A natural hot spring, Yaoji-no-Yu, on the 1st floor of the Yaoji Hakata Hotel in front of Hakata Station. Drilled to 1,257m in 1998, it is said to be the first spring put to practical use within Fukuoka City; a calcium-sodium chloride spring, heated and recirculated, with separate large and medium baths, a cold bath and a sauna for men and women.
The top-floor observation onsen of the Kagoshima Sun Royal Hotel in Yojiro, facing Kinko Bay. A natural chloride spring, heated and diluted, its top-floor bath looks out over the majestic Sakurajima; there is a far-infrared sauna for men and a steam sauna for women, and day visitors are welcome.
A scenic-view onsen opened in March 2024 inside the new-style flower park HANA·BIYORI in Inagi, Tokyo. Its crowning feature is an open-air bath perched about 100 metres up, gazing across central Tokyo's skyline, fed by reddish-brown sodium chloride-bicarbonate water (hypotonic, weakly alkaline, high-temperature) from 1,750 metres down - hailed as beauty-skin water. Inside: a high-concentration carbonated bath, silk bath, jet baths, sauna and a paid rock-bath area. The in-house restaurant Bishoku-no-Kiwami is supervised by Ginza Onodera, and there is a reclining lounge with over 10,000 manga plus a Japanese garden. Prices: 2,300 yen weekdays and 2,800 yen weekends/holidays for adults (including onsen tax, loungewear and towel rental). Visitors also enter HANA·BIYORI free, with free shuttle buses every 10 minutes from Keio-Yomiuri-Land Station.